Improvement in fire-escapes



anatema parte entre i .i MoHEL LEWIS,` AND JOHN oswE-NsoN, or WILLIAMSEUEG, NEW Youn.

\\Lccrs Patent N 100,777, dated March 15, 187

:Musavat/:ENT 'INy FIRE-ESCAPES.

. The Schedule referred to in these Letters Patent and making part of the same To all'ywhomit may concern i wheels, as. the same 4arms more up and down,'roll i along the front and rear sides of said frame.

Be it known that we, MICHEL Lnwrs and JOHN C. SWENSON, of Williamsburg, in thc county of Kings,

and State of New York,-hare'invented a new and useful Improvement in `Fire-Escape; and we do hereby declare that `the following" is a full, clear, and cxact description thereof, which will` enable others skilled in the art to make and usc thc same, reference heilig hadto the accompanying drawings forming part of this specification, in whichy Figure l is avcrtical 'longitudinal section of our improved fire-escape taken tln'oughthlinc a' zalig. 3.

Figure 2 is arear view of the same, part being broken away to showthe construction.

Figure 3 is a horizont-al section of the same, taken through the line y y, iig. l.

Our invention has folritsobject to furnish a simple, convenient, effective, andreliable fireescape for permanent attachment to buildings, which shall be so constructed and arranged as not to interfere with the opening and closing of the blindsor shutters; and

It'` consists in the construction and combination of the various parts of the fire-escape, as hereinafter more fully described. y y f i Ajrepresents an iron frame-work,` to be built into orsecurely attached to the walls of a house between two verticalfrows of windows, so as not to interfere with the opening andclosing of the window-'blinds or shutters.

, B are two parallel arms, placed oneabove th'eother, and the inner ends'of which are lrigidly and securely connected to each other,` or formed solid in one piece.

'vlhe outer ends of the two arms B are connected `to each other by va chain, C, so that the weight upon the lower arm may be partially supported by theupper arm. 'y

Theinner ends of the two arms B pass through a sljot iu the iron frame-work A, and hare small wheels D pivoted to' them, as shownin iigs.1,2, and3, which The lateral movements of the said arms B is guardedagainst bythe plates E, attached to the rear side of the frame A, and the edges of which rest against the sides of the rear `ends of the` said arms, as shown in figs. 2 and 3. y i

Fisthe platform, which `is placed upon the lower arm B,a`nd which isconnectedto the said arm by keepers G, attachedto the said platform, and through whichthe said arm passes. i f y To the' middle part of the platform F are pirotcd two o r more grooved wheels H, which roll along the upper edge of the lowerarm B, to enable the said platform to loe drawnfout from the wall of the house,

the chains I, the lower ends of which are attached to the said platform, and their upper ends slide upon long staples J, attached to the upper arm B, as Shown in ii". l.

TheY platform F is drawn out from the building by the chain K, one end of which is attached to the center of, the outer edge of the platform, and which passes through an eye-bolt or around a pulley attached to the outer end of the lower arm B.

The chain Ii passes through an eye-bolt or around a pulley attached to the connecting-bar of the arms B, and extends down along the wall of the building,

rlhe platform F is drawn in toward the house by the chain L, the end of which is attached to the plat.-

open the said doors, allowing people to step from the windows of the house directly upon the platform.

.The weight of the platform F- is balanced by a` weight, M, attached to the end of the chain X, and i which moves up and down in 'a recess in the rear side l of the frame A.

,lhe chain N passes over two pulleys O, piroted to the upper part of the frame A, and its other end is attached to the upper arm B.

The. platform F is raised and lowered by the chain l", one end of which is attached to the upper arm B, and which passes'oyer two pulleys Q, pivoted tothe upper part of the frame A.

The chain l passes down through a recess in the frame A, overa pulleygl, pivoted to a support in the lower part of said frame A, and its other en'd is attached to the lower arm 15, so that by turning the shaft S, to which the pulley7 R is attached, in one or the other direction, the said platform may be raised and lowered, as may be desired.

rlhe shaft S may be operated by acrauk, or a wheel or' pulley may be placed upon it, so that the platform F may be raised and lowered, as desired, by the power of the fire-cngine. i

I Haring thusdescribed our invention,

`We claim as new, and desire to sccurc by Letters Patenty l. The platform F, in combination with the arms B, and so arranged that it may be drawn from and toward the building upon said arms, and raised and lowered with and by them, substantially as herein shown and described, and for the purposes set fort-h.

2. The combination of the in-draw chain L and outdra-W chain K, with the platform F, arms B, and frame A, substantially :is herein shown and described and for the purposes sei: forth.

3. The combination of the balanceweight M, chain N, hoist :md loweringhaiu P, pulley R, and shaft; S, with the frame A, arms B, and platform F, substam tiallly as herein shown and described and for the purposes set fort-h.

4. An improved fire-escape, formed by the combination of the iron frame A, arms B, platform F, outdrmv :md in-draw elmins K L, chain N, balancefweight M, chain P, pulley R, and shaft S with each other, substantially as herein shown and described and for the purpose set forth.

The above specification of our invention signed by us this 19th day of' January, 1870.

MICHEL LEWIS. JOHN C. SWENSON.

Witnesses:

GEO. W. MABEE, J AMES T. GRAHAM. 

